Actually it is the largest model of the Castoldi waterjet drives range. Equipped (as Turbodrive 238 H.C., Turbodrive 340 H.C. and Turbodrive 400 H.C.) with the hydraulic clutch, integrated gear box (with N.20 gear ratios available) and all the items making it a complete propulsion machine ideally suited to equip in twin, triple or even quadruple installation fast vessels typically in the 18-30 m range.